Which of the liquids in each of the following pairs has higher vapour pressure: (i) (a) Alcohol, glycerine;(b) Petrol, kerosene and(c) Mercury, water ?(ii) Which one in each of the following pairs is more viscous (a) coconut oil, castor oil, (b) glycerine, kerosene and (c) soft drink, aerated water (soda water) (iii) Separate portions of chloroform and water at the same temperature are poured on your hands. The chloroform will feel colder. Account for this in terms of attractive forces